/*
   Copyright (c) 2011, 2012 Mizar Tools Contributors (mizartools.org)

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.
*/
/*  Contributors :
 *	2011-02-18 Marco Riccardi - initial implementation
 *  2012-04-06 Marco Riccardi - added message in DliParseException
 *
 */
package org.mizartools.dli;

import java.util.LinkedList;

public class Format {

    private LinkedList<Integer> integerList = new LinkedList<Integer>();

    private Format(){}

    public Format(LinkedList<Integer> integerList) throws DliException {
		if (integerList == null){
			throw new DliException();
		}
		this.integerList = integerList;
    }

	public static Format newInstance(String string) throws DliParseException {
		Format format = new Format();
		int position = string.indexOf("(");
		if (position == -1) {
			throw new DliParseException("["+string+"] is not valid in Format");
		}
		if (!string.substring(0, position).equals("$format")){
			throw new DliParseException("["+string+"] is not valid in Format");
		}
		string = string.substring(position+1, string.length()-1);
		int positionComma = Utility.searchSeparationComma(string);
		if (positionComma == -1) {
			throw new DliParseException("["+string+"] is not valid in Format");
		}
		while (positionComma != -1) {
			format.integerList.add(Integer.parseInt(string.substring(0, positionComma)));
			string = string.substring(positionComma+1, string.length());
			positionComma = Utility.searchSeparationComma(string);
		}
		format.integerList.add(Integer.parseInt(string));
		return format;
	}

	@Override
	public String toString() {
		StringBuilder sb = new StringBuilder();
		sb.append("$format(");
		boolean first = true;
		for (Integer integer : integerList){
			if (first) first = false;
			else sb.append(",");
			sb.append(integer.toString());
		}
		sb.append(")");
		return sb.toString();
	}

	public LinkedList<Integer> getIntegerList() {
		return integerList;
	}

}
